Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 11,531	$ 5,959
Accounts receivable	77,154	119,332
Assets held for sale	1,485
Other current assets	35,239	8,639
Total current assets	125,409	133,930
Oil and natural gas properties, successful efforts method:
Unproved properties	520,941	482,475
Proved oil and gas properties, net	1,210,876	807,583
Other property and equipment, net	12,349	6,300
Total property and equipment, net	1,744,166	1,296,358
OTHER NONCURRENT ASSETS
Other assets	9,278	3,481
Operating lease right-of-use assets	42,936
Assets held for sale	8,724
TOTAL ASSETS	1,930,513	1,433,769
CURRENT LIABILITIES
Accounts payable	122,141	116,735
Accrued capital expenditures	51,785	12,979
Accrued liabilities	52,081	56,909
Accrued interest payable	11,137	21,661
Liabilities associated with assets held for sale	4,568
Operating lease liability	12,889
Total current liabilities	254,601	208,284
NONCURRENT LIABILITIES
Debt, net of unamortized discount and debt issuance costs	499,848	497,778
Revolving credit facility	127,500	32,500
Asset retirement obligations	27,169	7,110
Other liabilities	2,296	611
Operating lease liability	30,185
Liabilities associated with assets held for sale	6,900
Total liabilities	948,499	746,283
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Preferred stock, 50,000,000 authorized, no shares issued and outstanding
Common stock, $0.01 par value, 1,000,000,000 authorized, 35,756,088 and 20,169,063 shares issued and outstanding, respectively	382	3,043
Additional paid in capital	2,350,072	2,065,119
Treasury stock, shares at cost; 2,488,525 and 1,747,624 shares, respectively	(8,819)	(3,357)
Accumulated deficit	(1,359,621)	(1,377,319)
Total stockholders’ equity	982,014	687,486
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,930,513	$ 1,433,769